1 /* 2 * Copyright (c) 2003-2007 The DragonFly Project. All rights reserved. 3 * 4 * This code is derived from software contributed to The DragonFly Project 5 * by Matthew Dillon <dillon@backplane.com> 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * 3. Neither the name of The DragonFly Project nor the names of its 18 * contributors may be used to endorse or promote products derived 19 * from this software without specific, prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * ---------------------------------------------------------------------------- 35 * "THE BEER-WARE LICENSE" (Revision 42): 36 * <phk@FreeBSD.ORG> wrote this file. As long as you retain this notice you 37 * can do whatever you want with this stuff. If we meet some day, and you think 38 * this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp 39 * ---------------------------------------------------------------------------- 40 * 41 * Copyright (c) 1982, 1986, 1988, 1993 42 * The Regents of the University of California. All rights reserved. 43 * (c) UNIX System Laboratories, Inc. 44 * All or some portions of this file are derived from material licensed 45 * to the University of California by American Telephone and Telegraph 46 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 47 * the permission of UNIX System Laboratories, Inc. 48 * 49 * Copyright (c) 1994 Bruce D. Evans. 50 * All rights reserved. 51 * 52 * Copyright (c) 1990 The Regents of the University of California. 53 * All rights reserved. 54 * 55 * This code is derived from software contributed to Berkeley by 56 * William Jolitz. 57 * 58 * Copyright (c) 1982, 1986, 1988 Regents of the University of California. 59 * All rights reserved. 60 * 61 * Redistribution and use in source and binary forms, with or without 62 * modification, are permitted provided that the following conditions 63 * are met: 64 * 1. Redistributions of source code must retain the above copyright 65 * notice, this list of conditions and the following disclaimer. 66 * 2. Redistributions in binary form must reproduce the above copyright 67 * notice, this list of conditions and the following disclaimer in the 68 * documentation and/or other materials provided with the distribution. 69 * 3. All advertising materials mentioning features or use of this software 70 * must display the following acknowledgement: 71 * This product includes software developed by the University of 72 * California, Berkeley and its contributors. 73 * 4. Neither the name of the University nor the names of its contributors 74 * may be used to endorse or promote products derived from this software 75 * without specific prior written permission. 76 * 77 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 78 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 79 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 80 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 81 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 82 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 83 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 84 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 85 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 86 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 87 * SUCH DAMAGE. 88 * 89 * @(#)ufs_disksubr.c 8.5 (Berkeley) 1/21/94 90 * $FreeBSD: src/sys/kern/subr_disk.c,v 1.20.2.6 2001/10/05 07:14:57 peter Exp $ 91 * $FreeBSD: src/sys/ufs/ufs/ufs_disksubr.c,v 1.44.2.3 2001/03/05 05:42:19 obrien Exp $ 92 * $DragonFly: src/sys/kern/subr_disklabel32.c,v 1.4 2007/06/19 06:07:57 dillon Exp $ 93 */ 94 95 #include <sys/param.h> 96 #include <sys/systm.h> 97 #include <sys/kernel.h> 98 #include <sys/proc.h> 99 #include <sys/sysctl.h> 100 #include <sys/buf.h> 101 #include <sys/conf.h> 102 #include <sys/disklabel.h> 103 #include <sys/disklabel32.h> 104 #include <sys/diskslice.h> 105 #include <sys/disk.h> 106 #include <sys/dtype.h> /* DTYPE_* constants */ 107 #include <sys/sysctl.h> 108 #include <machine/md_var.h> 109 #include <sys/ctype.h> 110 #include <sys/syslog.h> 111 #include <sys/device.h> 112 #include <sys/msgport.h> 113 #include <sys/msgport2.h> 114 #include <sys/buf2.h> 115 116 #include <vfs/ufs/dinode.h> /* XXX used only for fs.h */ 117 #include <vfs/ufs/fs.h> /* XXX used only to get BBSIZE/SBSIZE */ 118 119 static void partition_info(const char *sname, int part, struct partition32 *pp); 120 static void slice_info(const char *sname, struct diskslice *sp); 121 static const char *l32_fixlabel(const char *sname, struct diskslice *sp, 122 disklabel_t lpx, int writeflag); 123 124 /* 125 * Retrieve the partition start and extent, in blocks. Return 0 on success, 126 * EINVAL on error. 127 */ 128 static int 129 l32_getpartbounds(struct diskslices *ssp, disklabel_t lp, u_int32_t part, 130 u_int64_t *start, u_int64_t *blocks) 131 { 132 struct partition32 *pp; 133 134 if (part >= lp.lab32->d_npartitions) 135 return (EINVAL); 136 pp = &lp.lab32->d_partitions[part]; 137 *start = pp->p_offset; 138 *blocks = pp->p_size; 139 return(0); 140 } 141 142 static void 143 l32_loadpartinfo(disklabel_t lp, u_int32_t part, struct partinfo *dpart) 144 { 145 struct partition32 *pp; 146 const size_t uuid_size = sizeof(struct uuid); 147 148 bzero(&dpart->fstype_uuid, uuid_size); 149 bzero(&dpart->storage_uuid, uuid_size); 150 if (part < lp.lab32->d_npartitions) { 151 pp = &lp.lab32->d_partitions[part]; 152 dpart->fstype = pp->p_fstype; 153 } else { 154 dpart->fstype = 0; 155 } 156 } 157 158 static u_int32_t 159 l32_getnumparts(disklabel_t lp) 160 { 161 return(lp.lab32->d_npartitions); 162 } 163 164 /* 165 * Attempt to read a disk label from a device. 166 * 167 * Returns NULL on sucess, and an error string on failure 168 */ 169 static const char * 170 l32_readdisklabel(cdev_t dev, struct diskslice *sp, disklabel_t *lpp, 171 struct disk_info *info) 172 { 173 disklabel_t lpx; 174 struct buf *bp; 175 struct disklabel32 *dlp; 176 const char *msg = NULL; 177 int secsize = info->d_media_blksize; 178 179 bp = geteblk(secsize); 180 bp->b_bio1.bio_offset = (off_t)LABELSECTOR32 * secsize; 181 bp->b_bio1.bio_done = biodone_sync; 182 bp->b_bio1.bio_flags |= BIO_SYNC; 183 bp->b_bcount = secsize; 184 bp->b_flags &= ~B_INVAL; 185 bp->b_cmd = BUF_CMD_READ; 186 dev_dstrategy(dev, &bp->b_bio1); 187 if (biowait(&bp->b_bio1, "labrd")) 188 msg = "I/O error"; 189 else for (dlp = (struct disklabel32 *)bp->b_data; 190 dlp <= (struct disklabel32 *)((char *)bp->b_data + 191 secsize - sizeof(*dlp)); 192 dlp = (struct disklabel32 *)((char *)dlp + sizeof(long))) { 193 if (dlp->d_magic != DISKMAGIC32 || 194 dlp->d_magic2 != DISKMAGIC32) { 195 /* 196 * NOTE! dsreadandsetlabel() does a strcmp() on 197 * this string. 198 */ 199 if (msg == NULL) 200 msg = "no disk label"; 201 } else if (dlp->d_npartitions > MAXPARTITIONS32 || 202 dkcksum32(dlp) != 0) { 203 msg = "disk label corrupted"; 204 } else { 205 lpx.lab32 = dlp; 206 msg = l32_fixlabel(NULL, sp, lpx, FALSE); 207 if (msg == NULL) { 208 (*lpp).lab32 = kmalloc(sizeof(*dlp), 209 M_DEVBUF, M_WAITOK|M_ZERO); 210 *(*lpp).lab32 = *dlp; 211 } 212 break; 213 } 214 } 215 bp->b_flags |= B_INVAL | B_AGE; 216 brelse(bp); 217 return (msg); 218 } 219 220 /* 221 * Check new disk label for sensibility before setting it. 222 */ 223 static int 224 l32_setdisklabel(disklabel_t olpx, disklabel_t nlpx, struct diskslices *ssp, 225 struct diskslice *sp, u_int32_t *openmask) 226 { 227 struct disklabel32 *olp, *nlp; 228 struct partition32 *opp, *npp; 229 int part; 230 int i; 231 232 olp = olpx.lab32; 233 nlp = nlpx.lab32; 234 235 /* 236 * Check it is actually a disklabel we are looking at. 237 */ 238 if (nlp->d_magic != DISKMAGIC32 || nlp->d_magic2 != DISKMAGIC32 || 239 dkcksum32(nlp) != 0) 240 return (EINVAL); 241 242 /* 243 * For each partition that we think is open, check the new disklabel 244 * for compatibility. Ignore special partitions (>= 128). 245 */ 246 i = 0; 247 while (i < 128) { 248 if (openmask[i >> 5] == 0) { 249 i += 32; 250 continue; 251 } 252 if ((openmask[i >> 5] & (1 << (i & 31))) == 0) { 253 ++i; 254 continue; 255 } 256 if (nlp->d_npartitions <= i) 257 return (EBUSY); 258 opp = &olp->d_partitions[i]; 259 npp = &nlp->d_partitions[i]; 260 if (npp->p_offset != opp->p_offset || npp->p_size < opp->p_size) 261 return (EBUSY); 262 /* 263 * Copy internally-set partition information 264 * if new label doesn't include it. XXX 265 * (If we are using it then we had better stay the same type) 266 * This is possibly dubious, as someone else noted (XXX) 267 */ 268 if (npp->p_fstype == FS_UNUSED && opp->p_fstype != FS_UNUSED) { 269 npp->p_fstype = opp->p_fstype; 270 npp->p_fsize = opp->p_fsize; 271 npp->p_frag = opp->p_frag; 272 npp->p_cpg = opp->p_cpg; 273 } 274 ++i; 275 } 276 nlp->d_checksum = 0; 277 nlp->d_checksum = dkcksum32(nlp); 278 *olp = *nlp; 279 280 if (olp->d_partitions[RAW_PART].p_offset) 281 return (EXDEV); 282 if (olp->d_secperunit > sp->ds_size) 283 return (ENOSPC); 284 for (part = 0; part < olp->d_npartitions; ++part) { 285 if (olp->d_partitions[part].p_size > sp->ds_size) 286 return(ENOSPC); 287 } 288 return (0); 289 } 290 291 /* 292 * Write disk label back to device after modification. 293 */ 294 static int 295 l32_writedisklabel(cdev_t dev, struct diskslices *ssp, struct diskslice *sp, 296 disklabel_t lpx) 297 { 298 struct disklabel32 *lp; 299 struct disklabel32 *dlp; 300 struct buf *bp; 301 const char *msg; 302 int error = 0; 303 304 lp = lpx.lab32; 305 306 if (lp->d_partitions[RAW_PART].p_offset != 0) 307 return (EXDEV); /* not quite right */ 308 309 bp = geteblk((int)lp->d_secsize); 310 bp->b_bio1.bio_offset = (off_t)LABELSECTOR32 * lp->d_secsize; 311 bp->b_bio1.bio_done = biodone_sync; 312 bp->b_bio1.bio_flags |= BIO_SYNC; 313 bp->b_bcount = lp->d_secsize; 314 315 #if 1 316 /* 317 * We read the label first to see if it's there, 318 * in which case we will put ours at the same offset into the block.. 319 * (I think this is stupid [Julian]) 320 * Note that you can't write a label out over a corrupted label! 321 * (also stupid.. how do you write the first one? by raw writes?) 322 */ 323 bp->b_flags &= ~B_INVAL; 324 bp->b_cmd = BUF_CMD_READ; 325 KKASSERT(dkpart(dev) == WHOLE_SLICE_PART); 326 dev_dstrategy(dev, &bp->b_bio1); 327 error = biowait(&bp->b_bio1, "labrd"); 328 if (error) 329 goto done; 330 for (dlp = (struct disklabel32 *)bp->b_data; 331 dlp <= (struct disklabel32 *) 332 ((char *)bp->b_data + lp->d_secsize - sizeof(*dlp)); 333 dlp = (struct disklabel32 *)((char *)dlp + sizeof(long))) { 334 if (dlp->d_magic == DISKMAGIC32 && 335 dlp->d_magic2 == DISKMAGIC32 && dkcksum32(dlp) == 0) { 336 *dlp = *lp; 337 lpx.lab32 = dlp; 338 msg = l32_fixlabel(NULL, sp, lpx, TRUE); 339 if (msg) { 340 error = EINVAL; 341 } else { 342 bp->b_cmd = BUF_CMD_WRITE; 343 bp->b_bio1.bio_done = biodone_sync; 344 bp->b_bio1.bio_flags |= BIO_SYNC; 345 KKASSERT(dkpart(dev) == WHOLE_SLICE_PART); 346 dev_dstrategy(dev, &bp->b_bio1); 347 error = biowait(&bp->b_bio1, "labwr"); 348 } 349 goto done; 350 } 351 } 352 error = ESRCH; 353 done: 354 #else 355 bzero(bp->b_data, lp->d_secsize); 356 dlp = (struct disklabel32 *)bp->b_data; 357 *dlp = *lp; 358 bp->b_flags &= ~B_INVAL; 359 bp->b_cmd = BUF_CMD_WRITE; 360 bp->b_bio1.bio_done = biodone_sync; 361 bp->b_bio1.bio_flags |= BIO_SYNC; 362 BUF_STRATEGY(bp, 1); 363 error = biowait(&bp->b_bio1, "labwr"); 364 #endif 365 bp->b_flags |= B_INVAL | B_AGE; 366 brelse(bp); 367 return (error); 368 } 369 370 /* 371 * Create a disklabel based on a disk_info structure, initializing 372 * the appropriate fields and creating a raw partition that covers the 373 * whole disk. 374 * 375 * If a diskslice is passed, the label is truncated to the slice 376 */ 377 static disklabel_t 378 l32_clone_label(struct disk_info *info, struct diskslice *sp) 379 { 380 struct disklabel32 *lp; 381 disklabel_t res; 382 383 lp = kmalloc(sizeof *lp, M_DEVBUF, M_WAITOK | M_ZERO); 384 lp->d_nsectors = info->d_secpertrack; 385 lp->d_ntracks = info->d_nheads; 386 lp->d_secpercyl = info->d_secpercyl; 387 lp->d_secsize = info->d_media_blksize; 388 389 if (sp) 390 lp->d_secperunit = (u_int)sp->ds_size; 391 else 392 lp->d_secperunit = (u_int)info->d_media_blocks; 393 394 if (lp->d_typename[0] == '\0') 395 strncpy(lp->d_typename, "amnesiac", sizeof(lp->d_typename)); 396 if (lp->d_packname[0] == '\0') 397 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 398 if (lp->d_nsectors == 0) 399 lp->d_nsectors = 32; 400 if (lp->d_ntracks == 0) 401 lp->d_ntracks = 64; 402 lp->d_secpercyl = lp->d_nsectors * lp->d_ntracks; 403 lp->d_ncylinders = lp->d_secperunit / lp->d_secpercyl; 404 if (lp->d_rpm == 0) 405 lp->d_rpm = 3600; 406 if (lp->d_interleave == 0) 407 lp->d_interleave = 1; 408 if (lp->d_npartitions < RAW_PART + 1) 409 lp->d_npartitions = MAXPARTITIONS32; 410 if (lp->d_bbsize == 0) 411 lp->d_bbsize = BBSIZE; 412 if (lp->d_sbsize == 0) 413 lp->d_sbsize = SBSIZE; 414 415 /* 416 * Used by various devices to create a compatibility slice which 417 * allows us to mount root from devices which do not have a 418 * disklabel. Particularly: CDs. 419 */ 420 lp->d_partitions[RAW_PART].p_size = lp->d_secperunit; 421 if (info->d_dsflags & DSO_COMPATPARTA) { 422 lp->d_partitions[0].p_size = lp->d_secperunit; 423 lp->d_partitions[0].p_fstype = FS_OTHER; 424 } 425 lp->d_magic = DISKMAGIC32; 426 lp->d_magic2 = DISKMAGIC32; 427 lp->d_checksum = dkcksum32(lp); 428 res.lab32 = lp; 429 return (res); 430 } 431 432 static void 433 l32_makevirginlabel(disklabel_t lpx, struct diskslices *ssp, 434 struct diskslice *sp, struct disk_info *info) 435 { 436 struct disklabel32 *lp = lpx.lab32; 437 struct partition32 *pp; 438 disklabel_t template; 439 440 template = l32_clone_label(info, NULL); 441 bcopy(template.opaque, lp, sizeof(struct disklabel32)); 442 443 lp->d_magic = DISKMAGIC32; 444 lp->d_magic2 = DISKMAGIC32; 445 446 lp->d_npartitions = MAXPARTITIONS32; 447 if (lp->d_interleave == 0) 448 lp->d_interleave = 1; 449 if (lp->d_rpm == 0) 450 lp->d_rpm = 3600; 451 if (lp->d_nsectors == 0) /* sectors per track */ 452 lp->d_nsectors = 32; 453 if (lp->d_ntracks == 0) /* heads */ 454 lp->d_ntracks = 64; 455 lp->d_ncylinders = 0; 456 lp->d_bbsize = BBSIZE; 457 lp->d_sbsize = SBSIZE; 458 459 /* 460 * If the slice or GPT partition is really small we could 461 * wind up with an absurd calculation for ncylinders. 462 */ 463 while (lp->d_ncylinders < 4) { 464 if (lp->d_ntracks > 1) 465 lp->d_ntracks >>= 1; 466 else if (lp->d_nsectors > 1) 467 lp->d_nsectors >>= 1; 468 else 469 break; 470 lp->d_secpercyl = lp->d_nsectors * lp->d_ntracks; 471 lp->d_ncylinders = sp->ds_size / lp->d_secpercyl; 472 } 473 474 /* 475 * Set or Modify the partition sizes to accomodate the slice, 476 * since we started with a copy of the virgin label stored 477 * in the whole-disk-slice and we are probably not a 478 * whole-disk slice. 479 */ 480 lp->d_secperunit = sp->ds_size; 481 pp = &lp->d_partitions[RAW_PART]; 482 pp->p_offset = 0; 483 pp->p_size = lp->d_secperunit; 484 if (info->d_dsflags & DSO_COMPATPARTA) { 485 pp = &lp->d_partitions[0]; 486 pp->p_offset = 0; 487 pp->p_size = lp->d_secperunit; 488 pp->p_fstype = FS_OTHER; 489 } 490 lp->d_checksum = 0; 491 lp->d_checksum = dkcksum32(lp); 492 493 kfree(template.opaque, M_DEVBUF); 494 } 495 496 static const char * 497 l32_fixlabel(const char *sname, struct diskslice *sp, 498 disklabel_t lpx, int writeflag) 499 { 500 struct disklabel32 *lp; 501 struct partition32 *pp; 502 u_int64_t start; 503 u_int64_t end; 504 u_int64_t offset; 505 int part; 506 int warned; 507 508 lp = lpx.lab32; 509 510 /* These errors "can't happen" so don't bother reporting details. */ 511 if (lp->d_magic != DISKMAGIC32 || lp->d_magic2 != DISKMAGIC32) 512 return ("fixlabel: invalid magic"); 513 if (dkcksum32(lp) != 0) 514 return ("fixlabel: invalid checksum"); 515 516 pp = &lp->d_partitions[RAW_PART]; 517 518 /* 519 * What a mess. For ages old backwards compatibility the disklabel 520 * on-disk stores absolute offsets instead of slice-relative offsets. 521 * So fix it up when reading, writing, or snooping. 522 * 523 * The in-core label is always slice-relative. 524 */ 525 if (writeflag) { 526 start = 0; 527 offset = sp->ds_offset; 528 } else { 529 start = sp->ds_offset; 530 offset = -sp->ds_offset; 531 } 532 if (pp->p_offset != start) { 533 if (sname != NULL) { 534 kprintf( 535 "%s: rejecting BSD label: raw partition offset != slice offset\n", 536 sname); 537 slice_info(sname, sp); 538 partition_info(sname, RAW_PART, pp); 539 } 540 return ("fixlabel: raw partition offset != slice offset"); 541 } 542 if (pp->p_size != sp->ds_size) { 543 if (sname != NULL) { 544 kprintf("%s: raw partition size != slice size\n", sname); 545 slice_info(sname, sp); 546 partition_info(sname, RAW_PART, pp); 547 } 548 if (pp->p_size > sp->ds_size) { 549 if (sname == NULL) 550 return ("fixlabel: raw partition size > slice size"); 551 kprintf("%s: truncating raw partition\n", sname); 552 pp->p_size = sp->ds_size; 553 } 554 } 555 end = start + sp->ds_size; 556 if (start > end) 557 return ("fixlabel: slice wraps"); 558 if (lp->d_secpercyl <= 0) 559 return ("fixlabel: d_secpercyl <= 0"); 560 pp -= RAW_PART; 561 warned = FALSE; 562 for (part = 0; part < lp->d_npartitions; part++, pp++) { 563 if (pp->p_offset != 0 || pp->p_size != 0) { 564 if (pp->p_offset < start 565 || pp->p_offset + pp->p_size > end 566 || pp->p_offset + pp->p_size < pp->p_offset) { 567 if (sname != NULL) { 568 kprintf( 569 "%s: rejecting partition in BSD label: it isn't entirely within the slice\n", 570 sname); 571 if (!warned) { 572 slice_info(sname, sp); 573 warned = TRUE; 574 } 575 partition_info(sname, part, pp); 576 } 577 /* XXX else silently discard junk. */ 578 bzero(pp, sizeof *pp); 579 } else { 580 pp->p_offset += offset; 581 } 582 } 583 } 584 lp->d_ncylinders = sp->ds_size / lp->d_secpercyl; 585 lp->d_secperunit = sp->ds_size; 586 lp->d_checksum = 0; 587 lp->d_checksum = dkcksum32(lp); 588 return (NULL); 589 } 590 591 /* 592 * Set the number of blocks at the beginning of the slice which have 593 * been reserved for label operations. This area will be write-protected 594 * when accessed via the slice. 595 */ 596 static void 597 l32_adjust_label_reserved(struct diskslices *ssp, int slice, 598 struct diskslice *sp) 599 { 600 /*struct disklabel32 *lp = sp->ds_label.lab32;*/ 601 sp->ds_reserved = SBSIZE / ssp->dss_secsize; 602 } 603 604 static void 605 partition_info(const char *sname, int part, struct partition32 *pp) 606 { 607 kprintf("%s%c: start %lu, end %lu, size %lu\n", sname, 'a' + part, 608 (u_long)pp->p_offset, (u_long)(pp->p_offset + pp->p_size - 1), 609 (u_long)pp->p_size); 610 } 611 612 static void 613 slice_info(const char *sname, struct diskslice *sp) 614 { 615 kprintf("%s: start %llu, end %llu, size %llu\n", sname, 616 (long long)sp->ds_offset, 617 (long long)sp->ds_offset + sp->ds_size - 1, 618 (long long)sp->ds_size); 619 } 620 621 struct disklabel_ops disklabel32_ops = { 622 .labelsize = sizeof(struct disklabel32), 623 .op_readdisklabel = l32_readdisklabel, 624 .op_setdisklabel = l32_setdisklabel, 625 .op_writedisklabel = l32_writedisklabel, 626 .op_clone_label = l32_clone_label, 627 .op_adjust_label_reserved = l32_adjust_label_reserved, 628 .op_getpartbounds = l32_getpartbounds, 629 .op_loadpartinfo = l32_loadpartinfo, 630 .op_getnumparts = l32_getnumparts, 631 .op_makevirginlabel = l32_makevirginlabel 632 }; 633 634